This commit renames all registers in xtensa/specreg.h to by adding the
prefix XT_REG_. This is done to avoid naming collisions with similar
variable names. A new register file, viz., xt_specreg.h is created. The
previous names are still available to use but have been deprecated.
Closes https://github.com/espressif/esp-idf/issues/12723
Merges https://github.com/espressif/esp-idf/pull/16040
Currently, several example dependencies rely on the fact that all
registered components are added to the build, along with components
specified in common requirements. This results in longer build times
because even unused components must be built. Switch all examples to use
idf_minimal_build to compile only the components actually required by
the example.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
Closes https://github.com/espressif/esp-idf/issues/13629
NMI interrupt level has been freed for all the Xtensa targets, making it possible
for the main application to use it. An example has been added to show how to
proceed.
